2017 March 15 - April 24
2017 May 17 - June 29
2017 BTR deadline: 04/17/17
2017 October 11 - December 21
2017 Proposal deadline: 08/01/17
2017 BTR deadline: 09/10/17
Scientists from many disciplines come together at CHESS to do work in environmental and geological sciences. Whether detecting toxic and other harmful elements in local marine-life or performing trace element analysis of dendrochronologically-dated tree rings, researchers collaborate with CHESS staff scientists to investigate problems that affect our local and global environment. Additionally, CHESS is equipped with facilities to create high temperature and pressure environments, similar those present at the center of the earth, which can be applied to study for instance solid, metallic oxygen. Imaging capabilities have also opened the door for studying the durability of materials such as geotextiles, porous fabric used to control erosion.
X-ray techniques are very useful tools to help environmental scientists learn about and map elemental composition, distinguish between multiple chemical states, and characterize high-resolution atomic and molecular structures. Most x-ray studies can be done without having to alter or destroy specimens; data can be collected even on live plants. With spatial resolution as small as 20 microns, scientists employ a variety of techniques: x-ray absorption studies (XAS), x-ray fluorescence analysis (XRF), radiography and computed tomography (CT), and high-energy or high-resolution x-ray diffraction (XRD).